/** @file
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Implementation of Fsp Misc UPD Initialization.
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Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiPei.h>
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#include <Library/DebugLib.h>
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#include <Library/PeiLib.h>
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#include <Library/ConfigBlockLib.h>
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#include <Library/PeiServicesLib.h>
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#include <FspEas.h>
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#include <FspmUpd.h>
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#include <FspsUpd.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/DebugLib.h>
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#include <Library/DebugPrintErrorLevelLib.h>
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#include <Library/PciLib.h>
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#include <Ppi/ReadOnlyVariable2.h>
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#include <Guid/MemoryOverwriteControl.h>
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#include <PchAccess.h>
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#include "PeiMiscPolicyUpdate.h"
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/**
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Performs FSP Misc UPD initialization.
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@param[in,out] FspmUpd Pointer to FSPM_UPD Data.
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@retval EFI_SUCCESS FSP UPD Data is updated.
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@retval EFI_NOT_FOUND An instance of gEfiPeiReadOnlyVariable2PpiGuid
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could not be located.
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@retval EFI_OUT_OF_RESOURCES Insufficent resources to allocate a memory buffer.
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**/
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EFI_STATUS
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EFIAPI
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PeiFspMiscUpdUpdatePreMem (
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IN OUT FSPM_UPD *FspmUpd
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)
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{
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EFI_STATUS Status;
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EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariableServices;
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UINTN VariableSize;
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VOID *MemorySavedData;
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Status = PeiServicesLocatePpi (
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&gEfiPeiReadOnlyVariable2PpiGuid,
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0,
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NULL,
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(VOID **) &VariableServices
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);
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if (EFI_ERROR (Status)) {
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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VariableSize = 0;
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MemorySavedData = NULL;
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Status = VariableServices->GetVariable (
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VariableServices,
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L"MemoryConfig",
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&gFspNonVolatileStorageHobGuid,
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NULL,
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&VariableSize,
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MemorySavedData
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);
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if (Status == EFI_BUFFER_TOO_SMALL) {
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MemorySavedData = AllocatePool (VariableSize);
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if (MemorySavedData == NULL) {
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ASSERT (MemorySavedData != NULL);
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return EFI_OUT_OF_RESOURCES;
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}
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DEBUG ((DEBUG_INFO, "VariableSize is 0x%x\n", VariableSize));
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Status = VariableServices->GetVariable (
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VariableServices,
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L"MemoryConfig",
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&gFspNonVolatileStorageHobGuid,
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NULL,
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&VariableSize,
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MemorySavedData
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);
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if (Status == EFI_SUCCESS) {
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FspmUpd->FspmArchUpd.NvsBufferPtr = MemorySavedData;
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} else {
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DEBUG ((DEBUG_ERROR, "Fail to retrieve Variable:\"MemoryConfig\" gMemoryConfigVariableGuid, Status = %r\n", Status));
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ASSERT_EFI_ERROR (Status);
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}
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}
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FspmUpd->FspmArchUpd.NvsBufferPtr = MemorySavedData;
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return EFI_SUCCESS;
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}
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